---
title: "Discover available streams"
method: POST
path: "/source_discover"
tags: ["Stateless Sync API"]
---

# Discover available streams

`POST /source_discover`

Streams NDJSON messages (catalog, logs, traces) for the configured source.

## Request body

- object
  - `source` object, required — Source config ({ type, ...config })
    - `type` string, required

## Response `200`

NDJSON stream of discover messages

## Other responses

- `400` — Invalid params

## Changes

- **2026-04-27** `7b4cf2bfcc81` — 1 breaking, 1 warning
  - added required request body
  - deleted the `header` request parameter `x-source`
- **2026-04-27** `399c9fa011ec` — 1 info
  - the response property `oneOf[#/components/schemas/CatalogMessage]/catalog/streams/items/newer_than_field` became required for the status `200`
- **2026-04-20** `98cef0c30f36` — 1 breaking
  - the `header` request parameter `x-source` became required
- **2026-04-20** `1e719ad9a31f` — 1 breaking
  - removed the request body
- **2026-04-20** `8bea86f53f8e` — 1 info
  - added the optional property `oneOf[#/components/schemas/LogMessage]/log/data` to the response with the `200` status

[Full history](https://skmtc.dev/stripe/apis/stripe-sync-engine/changes/source_discover/post.md)

---

[API](https://skmtc.dev/stripe/apis/stripe-sync-engine.md) · [All operations](https://skmtc.dev/stripe/apis/stripe-sync-engine/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/stripe/stripe-sync-engine/revisions/7f4c6ed52875/schema)